Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

9K speeding up

9K speeding up AJHS nz

QuestionAnswer
mean speed The total distance something travels divided by the total time taken allows you to calculate the thing’s mean or average speed.
speed How fast something is moving. Often measured in metres per second (m/s), miles per hour (mph) or kilometres per hour (km/h).
accelerate Change speed.
air resistance A force that tries to slow down things that are moving through the air. It is a type of friction.
balanced forces When two forces are the same strength, but working in opposite directions.
friction A force that tries to slow things down when two things rub against each other.
unbalanced forces When two forces working in opposite directions are not the same strength.
drag Another name for air resistance or water resistance.
streamlined Giving something a smooth shape to reduce the air resistance or water resistance.
water resistance A force that tries to slow down things that are moving through water. It is a type of friction.
distance–time graph A graph that shows how far something has moved in a certain time.
terminal velocity The maximum speed of an object. Usually only applies to falling objects when the downward force is balanced by drag.
Created by: johncl